Cl？ +2NaOH=NaCl+NaClO+H？ o .Cl？ As oxidant and reductant, it is disproportionation reaction.
Chlorine gas is highly oxidizing and can react with all metals when heated. For example, gold and platinum burn in hot chlorine gas and react with valence-changing metals such as iron and copper to generate high-valent metal chlorides.
Extended data:
The use of chlorine:
1, chemical industry
The chemical industry is used to produce inorganic chemical products such as sodium hypochlorite, aluminum trichloride, ferric trichloride, bleaching powder, bromine and phosphorus trichloride, and also to produce organic chlorides such as chloroacetic acid, epichlorohydrin and monochlorobenzene. It is also used to produce neoprene, plastics and plasticizers. Daily chemical industry is used to produce synthetic detergent raw materials such as sodium alkyl sulfonate and sodium alkyl benzene sulfonate.
2. Electronic industry
In the electronics industry, high-purity chlorine gas is mainly used for dry etching, optical fiber, crystal growth and thermal oxidation in the electronics industry. China patent discloses a method for preparing nano microcrystalline cellulose by oxidative degradation of chlorine. Compared with the method of preparing nano-microcrystalline cellulose by hydrolysis, the method of chlorine oxidative degradation makes the nano-microcrystalline cellulose bright and white by using the bleaching effect of sodium hypochlorite produced by chlorine hydrolysis.
3. Used for brewery sewage treatment.
China patent discloses the method of treating beer wastewater with chlorine. Chlorine is a commonly used disinfectant in water supply companies, with low price, low dosage, reliable disinfection and mature technology. Chlorine can also deodorize and remove microorganisms, and the removal rate of biological oxygen consumption and chemical oxygen consumption is also high, which can ensure the stability of recycled water quality, so it is more suitable for brewery sewage treatment.
Baidu encyclopedia-chlorine